Axial buckling modes and crashworthiness of circular tube with external linear gradient grooves

Yao, Ruyang; Yin, Guansheng; Hao, Wenqian; Zhao, Zhen-Yu; Li, Xuan; Qin, Xiaoli

doi:10.1016/j.tws.2018.10.022

Cited by 30 publications

(8 citation statements)

References 42 publications

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“…The w 1 , w 2 , and w 3 denote the weighting factors of F p , E s , and C f , respectively. The values of the weighting factors were calculated from the comparison results using the analytic hierarchy process (AHP) method mentioned in equations ( 7)- (10). Two arbitrary criteria were considered in Case1, Case2, and Case3, whereas the effects of the three criteria were considered in Case4, Case5, and Case6.…”

Section: Multi-objective Optimization Results For Fmtsmentioning

confidence: 99%

“…The comparison results of F p , E s , and C f are listed in Table 1. The values of the weight factors assigned for F p , E s , and C f were 0.2970, 0.5396, and 0.1634, respectively, which were calculated by the equations ( 7)- (10). We also assumed that the criteria for different wall thicknesses had the same weight factor ratio.…”

Section: Selection Of Optimal Fmtsmentioning

confidence: 99%

“…[3][4][5] These studies focused on improving the crashworthiness performance and energy absorption of thin-walled tubes. Meanwhile, other new structural designs, such as bionic, 6,7 self-similar hierarchical, 8,9 gradient, 10 and hybrid designs 5,11 have been used to build multi-cell structures with efficient energy absorption and light weight.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical study on a fractal-like multi-cell tubes with the Fibonacci helical section under axial crushing

Huang

Xiang

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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A novel bio-inspired fractal-like multi-cell tube (FMT) was developed based on the Fibonacci spiral structure in creatures. A numerical study on FMTs with different sectional configurations was conducted under axial crushing using the nonlinear finite element method. Three criteria used to evaluate the crashworthiness of the FMTs: initial peak crush force ( Fp), specific energy absorption ( Es), and crush force efficiency ( Cf). The effects of different numbers of helical ribs N and wall thickness t on the crashworthiness and deformation mode of the FMTs were analyzed. Secondly, an analytic hierarchy process (AHP) method and a complex proportional assessment (COPRAS) method were applied to select the best possible sectional configuration. According to this method, three types of FMT with one, three, and five ribs (FMT1, FMT3, and FMT5) were determined to have a superior sectional configuration. Finally, a metamodel-based multi-objective optimization method based on a polynomial regression metamodel and multi-objective particle optimization (MOPSO) algorithm were employed to optimize the structural parameters of the FMT1, FMT3 and FMT5 under six designed cases, including two criteria cases and three criteria cases, where t and basic diameter D1 of the Fibonacci helical were considered the design variables. The multi-objective optimization results indicated that the optimal D1 does not exceeding 15 mm, the optimal t ranges from 0.29 to 0.72 mm under three criteria cases. Further research pertaining to the crashworthiness analysis of FMTs under oblique crushing should be conducted.

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Section: Multi-objective Optimization Results For Fmtsmentioning

confidence: 99%

Section: Selection Of Optimal Fmtsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical study on a fractal-like multi-cell tubes with the Fibonacci helical section under axial crushing

Huang

Xiang

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Among these researches, we can refer to references. 35,36 In these researches, Yao et al as well as Tian et al reduced the maximum force as much as possible by creating grooves in the body of absorbers with a cylindrical cross-section.…”

Section: Review Of Literature and Introductionmentioning

confidence: 99%

Investigating hole effects on bending performance of aluminum beams with square cross-sections under three-point bending load and their implementation in light vehicles

Shen¹,

Zahra²

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The bending behavior of beams with a square cross-section containing holes under a three-point bending load was investigated in the present study. As aluminum alloys are lighter than steel and there are many automobile companies that use this material, 6063 aluminum alloy was chosen for this study. The present research was carried out both experimentally and numerically. In the numerical section, aluminum beams were simulated with the finite element software LS-DYNA. These beams contained holes with a diameter of 21 mm, which were placed at different distances on the length of the beam. In this research, 36 perforated beams were simulated in three thicknesses: 1, 1.5, and 2, and the holes were placed at 0, 3.5, 7, 10.5, 14, 17.5, 21, 24.5, 28, 35, 42, and 49 mm in relation to the middle of the beam. In addition, a beam without holes was studied for each thickness. Numerical simulations were validated with experiments and good results were observed. The obtained results showed that as the hole moves from the center to the sides, the absorption of energy and maximum force increases. In the final section, the most optimal beams were determined in terms of thickness and hole location, and based on these a car bumper was proposed.

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“…Even though the energy absorption was increased, the stiffeners also increased the chance of crash box global buckling. External linear-gradient grooves effect on crashworthiness of the circular tubes was studied by Yao et al [22]. The crashworthiness design of the windowed tubes under axial loading was studied by Nikkhah et al [23].…”

Section: Introductionmentioning

confidence: 99%

Potential of inverted process-chain development to improve crash box performance

Aghdam¹,

Sparrer²,

Zimmermann³

et al. 2021

Preprint

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Currently, components, processes and materials are mainly developed independently. However, to exploit the full potential of modern materials in component design, integrative development work is necessary. Component performance-based requirements and corresponding local material properties must be taken into account. In this work, a component-driven approach and therefore an inverted process chain is presented and demonstrated on the performance of a crash box, produced from DP600 steel. This is aimed to increase the energy absorption of the crash box without losing progressive buckling behavior. The finite element simulations were carried out on the crash box. It was shown that the crash box corners play an important role in the crash box performance, and required material properties for improving the crash box performance were derived based on the simulations. Heat treatment strategies were afterward developed and experimentally validated to fulfill these requirements. Then different local heat-treatment processes were applied to the corners of the crash boxes and tested experimentally. The experiments results validate the potential of the inverted process chain to improve the components performance. Furthermore, in this paper, optimal material properties were extracted for crash box strengthening, which lead to high energy absorption and a low peak force of it.

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Axial buckling modes and crashworthiness of circular tube with external linear gradient grooves

Cited by 30 publications

References 42 publications

Numerical study on a fractal-like multi-cell tubes with the Fibonacci helical section under axial crushing

Numerical study on a fractal-like multi-cell tubes with the Fibonacci helical section under axial crushing

Investigating hole effects on bending performance of aluminum beams with square cross-sections under three-point bending load and their implementation in light vehicles

Potential of inverted process-chain development to improve crash box performance

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